Syringe.



V. HLWARD.

SYRINGE. APPLIOATION FILED MAR. 12, 1910.

1,019,207, Patented Mar. 5, 1912-,

VOLNEY H. WARD, OF BATESVILLE, MISSISSIPPI.

SYRIN GE.

Specification of Letters Patent.

Patented Mar. 5, 1912.

Application filed March 12, 1910. Serial No. 548,922.

I To all whom it may concern:

' clear, and

Be it known that I, VOLNEY H. WARD, a citizen of the United States, residing at Batesville, in the county of Panola, State of Mississippi, have invented certain new and useful Improvements in Syringes; and I do hereby declare the following to be a full, exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to hypodermic syringes and has special reference to a form of syringe of this character adapted for deep injections into dense tissues where the force to be exerted is relatively great.

One object of the invention is to provide a novel form of syringe of this character wherein the piston actuating parts shall be of improved general arrangement.

With the above and other objects in view the invention consists in general of a hypodermic syringe having an improved and novel form of piston actuating means.

The invention further consists in certain novel details of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings, and specifically set forth in the claims.

In the accompanying drawings, like characters of reference indicate like parts in the several views, and :-Figure 1 is a side elevation of a syringe of this character with the parts closed and piston depressed. Fig. 2 is a similar view showing the position the parts occupy when the piston is raised. Fig. 3 is an elevation at right angles to Fig. 1. Fig. 4 is a section on the line 4- of Fig. 1. Fig. 5 is a section on the line 5-5 of Fig. 1. Fig. 6 is a detail view partly in section, showing the manner of attaching one of the handles to the device.

The numeral 10 indicates the barrel of the syringe and in'this barrel moves the ordinary piston which is provided with a piston rod or stem 11. On the barrel 10 is secured a sleeve 12 which is provided at its lower end with diametrically opposed pairs of ears 13 wherethrough pass pivot screws 14. On the upper end of the'sleeve 12 is secured a guide plate comprising a central ring 15 wherefrom project diametrically opposed pairs of guide arms 16, the arms of each pair being in spaced relation. Screws 15' or other suitable fastening means are passed through apertures (not shown) which are formed in the sleeve 12 and ring 15, and have their inner ends secured to the barrel 10. The handle levers used in this device comprise straight portions 17 having outwardly extending slots 18 at their lower ends which are adapted to engage over the pivot screws 1 L as clearly shown in Fig. 6. The upper ends of these handle levers 17 are provided with hand grips 19 and pivoted to the insides of these hand grips are links 20 which are pivoted together and to the piston rod or stem 11 as indicated at 21. It will be observed that the handle levers are held between the arms 16 so that they are properly guided as they move to and from each other.

In the operation of the device the needle, indicated at 22, is inserted in the liquid to be injected and the handles forced apart to the position shown in Fig. 2 or until a suflicient quantity of the liquid has been drawn into the barrel 10. The needle is then inserted in the tissue to be injected and the grips 19 firmly grasped in the hand and drawn together. By reason of the powerful leverage exerted, especially toward the end of the movement, the liquid contents of the barrel may be forced into deep and dense tissues. There has thus been provided a slmple'and efficient device of the kind decribed and for the purpose specified Having thus described the invention, what is claimed as new, is

1. The combination with a syringe provided with a barrel, piston, and piston rod; of a sleeve surrounding said barrel, a ring surrounding the sleeve at its upper end and provided with laterally projecting and diametrically opposed pairs of guide arms, a pair of hand levers respectively mounted between each pair of guide arms for reciprocatory movement and pivoted at their lower ends to the lower end of the sleeve, and links connecting the hand levers and the iston rod.

2. The combination with a syringe provided with a barrel, piston, and piston rod; of a sleeve surrounding said barrel and provided at its lower end with spaced pairs of ears diametrically opposed, a ring surrounding the sleeve at its upper end and provided with laterally projecting and diametrically opposed pairs of guide arms, a pair of hand levers respectively mounted between each pair of guide arms for reciprocatory movecommon fastening means for connecting the ring, sleeve and barrel, said ring being provided with laterally projecting and diametrically opposed pairs of guide arms, a pair of hand levers respectively mounted between each pair of guide arms for reciprooatory movement and pivoted at their lower ends to the lower end of the sleeve, and links con necting the hand levers and the piston rod.

4. The combination with a syringe provided with a barrel, piston, and piston rod, of a sleeve surrounding said barrel and provided at its lower end with spaced pairs of ears diametrically disposed, pivots carried in said ears, a ring surrounding the sleeve at its upper end and provided with laterally projecting and diametrically opposed pairs of guide arms, a pair of hand levers respectively mounted between each pair of guide arms for reciprocatory movement and provided at their lower ends with outwardly extending slots for engaging said pivots, and links connecting the hand levers and piston rod.

In testimony whereof, I affix my signature, in presence of two witnesses.

WV. M. KEITH, WALTER RIPLIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

